Method of amplifying an input signal

A device for amplifying an input signal, comprising:

• a power amplifier for amplifying a binary input signal,
• a modulation device for generating the binary input signal on the basis of the input signal,
• the input signal being a complex-valued signal and the binary input signal being a real-valued signal,
• the modulation device comprising an adding device configured to add the complex-valued input signal to a complex-valued carrier signal of a predefined frequency and to thus generate a resulting complex-valued signal, and
• the modulation device further comprising a combination device connected downstream from the adding device and configured to generate the real-valued binary input signal from the real part and the imaginary part of the resulting complex-valued signal by combining the real part and the imaginary part of the resulting complex-valued signal,
• wherein the complex-valued input signal is a digital signal, and the device comprises a digital oscillator for generating the complex-valued carrier signal, and
• wherein the combination device comprises a multiplier, a downstream-connected comparator and a series connection comprising a digital-to-analog converter arranged therebetween, the multiplier being configured to combine the real part and the imaginary part of the resulting complex-valued signal to form a digital output signal, the digital-to-analog converter being configured to convert the digital output signal of the multiplier to an analog signal, and the comparator being configured to convert the analog output signal of the digital-to-analog converter to the binary time-continuous input signal of the power amplifier.

A device for amplifying an input signal, comprising:

• a power amplifier for amplifying a binary input signal,
• a modulation device for generating the binary input signal on the basis of the input signal,
• the input signal being a complex-valued signal and the binary input signal being a real-valued signal,
• the modulation device comprising an adding device, the adding device comprising a first adder and a second adder and being configured to add the complex-valued input signal to a complex-valued carrier signal of a predefined frequency and to thus generate a resulting complex-valued signal, and
• the modulation device further comprising a combination device connected downstream from the adding device and configured to generate the real-valued binary input signal from the real part and the imaginary part of the resulting complex-valued signal by combining the real part and the imaginary part of the resulting complex-valued signal,
• wherein the complex-valued input signal is a digital signal, and the device comprises a digital oscillator for generating the complex-valued carrier signal, and
• wherein the combination device comprises first and second digital-to-analog converters, the first digital-to-analog converter being serially connected downstream from the first adder and configured to convert the real part of a digital resulting signal to an analog real-valued signal, and the second digital-to-analog converter being serially connected downstream from the second adder and configured to convert the imaginary part of a digital resulting signal to an analog signal.

A device for amplifying an input signal, comprising:

• a power amplifier for amplifying a binary input signal,
• a modulation device for generating the binary input signal on the basis of the input signal,
• the input signal being a complex-valued signal and the binary input signal being a real-valued signal,
• the modulation device comprising an adding device, the adding device comprising a first adder and a second adder and being configured to add the complex-valued input signal to a complex-valued carrier signal of a predefined frequency and to thus generate a resulting complex-valued signal, and
• the modulation device further comprising a combination device connected downstream from the adding device and configured to generate the real-valued binary input signal from the real part and the imaginary part of the resulting complex-valued signal by combining the real part and the imaginary part of the resulting complex-valued signal,
• wherein the complex-valued input signal is a digital signal, and the device comprises a digital oscillator for generating the complex-valued carrier signal, and
• wherein the combination device comprises first and second multipliers, the first multiplier being serially connected downstream from the first adder, and the second multiplier being serially connected downstream from the second adder, and the first multiplier being configured to temporally multiply a time-discrete output signal, formed from the real part, of the first adder by itself, and the second multiplier being configured to temporally multiply a time-discrete output signal, formed from the imaginary part, of the second adder by itself.